11 37 700 Replacing control unit (Valvetronic)

WARNING: This page is about a different car, the 2005 BMW 545i and 2004 BMW 545i. However, it is still accessible from the selected car via links, so may be relevant.

Switch off ignition.

Follow instructions for disconnecting and connecting battery. Refer to 12 00 ... INSTRUCTIONS FOR DISCONNECTING AND CONNECTING BATTERY .

Disconnect battery. Refer to 12 00 ... INSTRUCTIONS FOR DISCONNECTING AND CONNECTING BATTERY .

Observe following instructions before replacing control unit: Program control unit. Refer to 12 14 705 PROGRAMMING CONTROL UNIT (DME / DDE) .

Remove right fresh air duct. Refer to 64 31 053 REMOVING AND INSTALLING OR REPLACING FRESH AIR DUCT .

Release screw and remove holder (1).

Release screws and remove cover (2) from control unit box.

NOTE: Release screws on seal (3) only when removing wiring harness.

Fig 1: Locating Cover Retaining Screws From Control Unit Box

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Installation:

Insert tabs (1) in openings (2) and close cover.

Fig 2: View Of Tabs In Openings And Close Cover

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Unlock and detach plug connections on Valvetronic control unit (1).

Remove Valvetronic control unit (1).

Fig 3: Locating Valvetronic Control Unit

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NOTE: Interrogate fault memory of DME control unit. Check stored fault messages. Check stored fault messages. Check stored fault messages. Rectify faults. Then clear fault memory.